Official websites use .govA .gov website belongs to an official government organization in the United States. or https://	means youâve safely connected to the .gov website. Share sensitive information only on official, secure websites. The Department of Energy (DOE) manages the United States' nuclear infrastructure and administers the country's energy policy. The Department of Energy also funds scientific research in the field. Ask a real person any government-related question for free. They will get you the answer or let you know where to find it.